20 Feb
2024
20 Feb
'24
9:49 p.m.
Fons, Dennis, davic and Lorenzo,
Thanks very much for your responses to my question.
I never thought of GNU Octave and gunplot for this task, mostly because
of the extra steps it would require to listen to the resultant audio
file. But, there are definite posibilities there.
I've never heard of PureDAta or CSound, but will explore these
programs. I also wasn't aware of Sonic Visualizer or Glava, but will
explore these, too.
Thanks, again, for your advice and guidance. I really appreciate your
work to assist me.
-Kevin
On Tue, 2024-02-20 at 12:00 +0100,
Message: 1
Date: Mon, 19 Feb 2024 14:41:49 +0100
From: Fons Adriaensen <fons(a)linuxaudio.org>
Subject: [LAU] Re: Teaching tool to visualize waveforms?
To: linux-audio-user(a)lists.linuxaudio.org
Message-ID: <ZdNanb9LkIQ2IduF(a)mail.linuxaudio.org>
Content-Type: text/plain; charset=us-ascii
On Mon, Feb 19, 2024 at 09:21:37AM +0100, Lorenzo Sutton wrote:
On 18/02/2024 21:11, Kevin Zembower wrote:
Good advice.
If you just want to show mathematically defined waveforms then
gnuplot can be useful. For example
gnuplot> set grid
gnuplot> plot [0:12.6] sin(x) + sin(2*x)/2 + sin(3*x)/3 + sin(4*x)/4
+ sin(5*x)/5
will show a nice approximation to a sawtooth.
One thing I usually point out to students is that the shape
of a waveform doesn't tell you much about how it will sound.
For example, try
gnuplot> plot [0:12.6] sin(x) + cos(2*x)/2 + cos(3*x)/3 + sin(4*x)/4
+ sin(5*x)/5
which sounds just the same as the previous one but looks quite
different.
Ciao,
--
FA
------------------------------ However, we never saw a visual representation of
the combined
waveforms. As a former teacher, I thought it would enhance the
lessons
to also visualize the waveform.
I would really recommend (as Dennis already suggested) to use Pure
Data (aka
Pd) [1] in the teaching / learning pipeline. While it has a little
learning
curve - basic examples like this are quite easy to create and
students could
also install it and try out stuff and try 'hacking' the examples.